El uso de las bitácoras como herramienta de optimización del aprendizaje

La autora describe una experiencia en la que los alumnos utilizaron los weblogs en sus clases en la Facultad de CC. de la Comunicación de la Universidad de Málaga. La profesora, consciente de la importancia de las TIC en nuestros días, y más si cabe para los futuros profesionales de la comunicación, enseña a los discentes a utilizar en el aula los weblogs, a que sean conscientes de la reflexión de la información, etc

Theoretical study of loss compensation in long-range dielectric loaded surface plasmon polariton waveguides

In this paper, a theoretical study of loss compensation in long-range dielectric loaded surface plasmon waveguides (LR-DLSPPs) is presented. Although extendable to other gain materials, rare-earth doped double tungstates are used as gain material in this work. Two different structures are studied and the effect of the different waveguide geometrical parameters on the material gain required to fully compensate the propagation losses are reported. The simulations were performed at 1.55 micrometer wavelength. A material gain as low as 12.5 dB/cm was determined as sufficient to obtain complete loss compensation in one of the proposed waveguide structures supporting sub-micron lateral mode dimension

Risk prevention and policy formulation : responding to the 1999 mud-floods catastrophe in El Litoral Central, Venezuela

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2005.Pages 91-115 consist of 8 folded col. maps printed in leaves, 28 x 43 cm., inserted in pocket on p. [3] of cover.Includes bibliographical references (p. 115-116).Fifteen days of constant and intense rainfall in Venezuela culminated on December 16 1999, in catastrophic landslides and flooding along 25 miles of the Vargas State coastal strip. This catastrophe ravaged the Caracas seaside, ripping up houses and infrastructure and literally reshaping the coastline and beaches. Historical records indicate that similar natural events leading to landslides have occurred in this region before-each fifty years on average. Moreover, the evidence of obliterated structures over hazard-prone areas in Vargas State's cities has led the assumption that land-use planning was not successfully used as a hazard- mitigating technique. Today, after the 1999 mud-flood catastrophe, Venezuela's government is implementing land-use mitigation strategies. However, their efficiency in face of future similar events is not guaranteed. Depending on the tools and instruments used to implement these strategies, these programs will perform successfully --saving lives, time, and resources and promoting the economic and social growth of the region-or fail just as they have in the past. With the aid of government, dwellers have returned slowly to reconstruct their damaged properties, forgetting the strength of nature and the footprints of the rivers, to rebuild in hazard-prone areas and thus starting the cycle again. To evaluate this cycle, this study analyzes the tools used by the Venezuelan government to implement and-use policies in this risk-prone area. This study finds that the combination of tools used in the past and the combination used in the current program are inefficient to pursue the desired goals.(cont.) These programs are mainly owned and operated by the national government, leaving very little space for local government, the private sector and communities to participate in the reconstruction process. This predominance does not mean national government should not be present in these programs. It does mean that the national government should inform, coordinate, and provide incentives to local governments to engage proactively in the reconstruction process while incorporating mitigation measures in land-use planning. Vargas State inhabitants must be active and willing participants in this process and the government should provide whatever assistance may be needed.by Sonia Parisca-Blanco.S.M

ουτω(ς) uses in Xenophon's Cyropaedia

En el presente trabajo presentamos el resultado de un estudio de los usos de οὕτω(ς) en el texto de la Ciropedia, prestando especial atención a los valores conjuntivos del adverbio, los más descuidados por las gramáticas tradicionales, y su distribución en los diferentes tipos textuales.In this paper we study the uses of οὕτω(ς) in Cyropaedia, paying particular attention to conjunctive adverb values, actually the most neglected by traditional grammars, and their distribution in different text types.Ministerio de Economía y Competitividad (España) FFI2012-36944-C03-0

El canto XXII de la "Ilíada" en los códices griegos de la Biblioteca Nacional

Some codices which belong to the category of manuscripts recentiores or found in the libraries of Southern Europe are not negligible. All three of the Iliad that are heldn in Madrid do not detract much from others as to be ignored in the critical editions. Although they are generally added to the major testimonies, they often provide support for readings scarcely documented and sometimes they offer unique testimony that edited versions deserve.No por pertenecer a la categoría de los códices recentiores o por encontrarse en bibliotecas del Sur de Europa son despreciables algunos manuscritos. Los tres de la Ilíada que se guardan en Madrid no desmerecen tanto de los demás como para ser ignorados en la ediciones críticas. Aunque en general se suman a los testimonios más mayoritarios, aportan con frecuencia apoyo a lecturas poco documentadas y, a veces, ofrecen testimonio único de variantes que merecen ser editadas

Paisaje arquitecturado y arquitectura en el paisaje: la fortificación del territorio en época moderna en el Baixo Miño

[ES] Este texto es el resultado de los trabajos arqueológicos desarrollados por un equipo del Laboratorio de Arqueología del Paisaje del Instituto de Estudios Gallegos Padre Sarmiento (CSIC-Xunta) y del Laboratorio de Patrimonio, Paleoambiente y Paisaje (IIT, USC), en el marco de la redacción del Plan Director de las Fortalezas Transfronterizas del Tramo Bajo del Río Miño, adjudicado por la Dirección Xeral de Patrimonio Cultural de la Xunta de Galicia a la empresa Inzamac Asistencias Técnicas S.A. Estos trabajos consistían en la realización de un estudio arqueológico previo a la redacción del plan director de todas las fortificaciones emplazadas en la margen gallega del río Miño, donde éste hace frontera con Portugal, así como de los Bienes Patrimoniales que pudieran estar relacionados con las infraestructuras de dichas fortalezas. De dicho estudio derivarían unas propuestas de actuación. El estudio, realizado desde los planteamientos de la Arqueología del Paisaje y la Arqueología de la Arquitectura, ha permitido comprender la formación del territorio fortificado en el Baixo Miño en época moderna, que se articulaba en base a sistema defensivos, tanto para puntos concretos del Miño como para la totalidad de esta área.[EN] This text is the result of the archaeological work carried out by a team from the Laboratory of Landscape Archaeology from the Padre Sarmiento Galician Studies Institute (CSIC-Xunta) and the Heritage, Paleoenvironment and Landscape Laboratory (IIT, USC), as part of drafting the Master Plan Fortalezas Transfronterizas del Tramo Bajo del Río Miño, awarded by the Dirección Xeral de Patrimonio Cultural of the Xunta de Galicia to the company Inzamac Technical Assistance S.A. This work consisted of conducting an archaeological survey prior to the writing of this master plan of all the fortifications located on the Galician margin of the Miño river, where it borders with Portugal, as well as the assets that may be related to infrastructure of these strengths. In this study derive some proposals for action. The study, from the approach of landscape archeology and the archeology of architecture, has elucidated the formation of the territory in the Baixo Miño fortified in modern times, which is articulated on the basis of defensive system, both for specific points of Miño as for the whole of this area

The effects of substituents and solvents on the conformation of benzophenones

Motivation. Natural and synthetic benzophenones are compounds of great scientific and applied interest due to the varied biological and physicochemical properties that they posses. As part of a program aimed at investigating new physicochemical properties of substituted benzophenones, we carry out a study on the influence of the substituents and solvents upon the molecular conformations of these compounds. In the future, we expect to propose relationships between the molecular structural parameters with diverse experimental properties of the compounds that are currently being determined in our laboratory. Method. The HF/6–31G(d) and B3LYP/6–31G(d) methods were used for calculations. Onsager’s and Tomasi’s models were used to analyze the solvent effects on the nine benzophenones studied. Results. A conformational equilibrium was proposed between the two conformers of benzophenones with the greatest thermodynamic stability. The total energies, torsional angles, dipole moments, structural and reactivity molecular parameters, and conformational equilibrium constants were calculated in vacuum, ethanol, methanol and water. The calculated magnitudes were correlated with Hammett’s substituent constants and parameters of solvating solvents. Conclusions. The benzophenones investigated have non–planar structures. Very good linear relationships between the molecular dihedral angles and Hammett’s p–substituent constants were obtained. Electron–donating substituents increase the planarity of the substituted benzoyl group that involves phenyl ring A of the molecules, as well as the folding of phenyl ring B. The conformational equilibrium constants of o–hydroxy–benzophenones ranged approximately between 10–7–10–6. On the other hand, it was concluded that greater hydrogen–bond donor capability of a solvent increases the polarization of the compounds and consequently, increases their dipole moments. It was further concluded that the electron–donating groups increase the strength of the intramolecular hydrogen bond and that in the solvents used the o–hydroxy–benzophenones possess an important intramolecular hydrogen bond of the moderate classFil: Mantas, Athena. University of Toronto; CanadáFil: Blanco, Sonia Encarnacion. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; ArgentinaFil: Ferretti, Ferdinando Hector. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Física; Argentin